Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '313b81ed06f1cf8a626bfa8439b6c6442c11663f1b26f482e699b6d1634819a9' 
  AND token = 'GptdJ8HWUQeIDdJsTnQIrA1YsOjqXzG57yOMtettuTY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}